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thenewperson

macrumors 6502a
Original poster
Mar 27, 2011
992
912
From what I know, GDDR memory runs too hot and too power hungry, so it'll likely never considered. Also has 2-3 times the access latency as well.
And get 1 hour battery life max? Not to mention ultra high latency?
True, but my comment was in response to GPUs typically using GDDR6 over wide LPDDR5. I figured it was mainly cost.
 

leman

macrumors Core
Oct 14, 2008
19,522
19,679
True, but my comment was in response to GPUs typically using GDDR6 over wide LPDDR5. I figured it was mainly cost.

You are correct that the main reason that GPU use GDDR is reduced cost. But they also don't care that much about power consumption, not even on laptops, since the dGPU can be disabled in regular operation, so they can simply pick the cheapest option that lets them meet their performance targets. GDDR was never an option for Apple, because you can't use it as a portable machine's system memory.
 

Adarna

Suspended
Jan 1, 2015
685
429
True, but my comment was in response to GPUs typically using GDDR6 over wide LPDDR5. I figured it was mainly cost.
You may want to rename this thread to M1 Pro & M1 Max so that it stays relevant to this week's product announcment.
 

thenewperson

macrumors 6502a
Original poster
Mar 27, 2011
992
912
You may want to rename this thread to M1 Pro & M1 Max so that it stays relevant to this week's product announcment.
lmao, true. I think it's a finished thread at this point though. Or at least it's clear other threads are more relevant anyway.
 
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